$navColor:#0085ff;

@mixin  arrow ($w:10px,$c:#000,$dir:top) {

    font-size: 0;
    width: 0;
    border: $w solid transparent;
    border-#{$dir}-color:$c;

    
}

@mixin clearfix() {
    &:after{
        display: block;
        content: '';
        clear: both;
    }
    
}